class_docstr: Timetable that never schedules anything.
  
  This corresponds to ``schedule=None``.
code: def next_dagrun_info(
      self,
      *,
      last_automated_data_interval: DataInterval | None,
      restriction: TimeRestriction,
  ) -> DagRunInfo | None:
      return None
  
imports: from __future__ import annotations
  import operator
  from typing import TYPE_CHECKING, Any, Collection
  from pendulum import DateTime
  from airflow.timetables.base import DagRunInfo, DataInterval, Timetable
label_desc: Use image node_id 2 for calling the NullTimetable obj's underlying member method code with example usage: obj.next_dagrun_info() and returns: None